What is the context window of Inkling 2 Small, and how long can its output be?

Inkling 2 Small has a context window of 1M tokens (1,048,576) and a maximum output of 131K tokens (131,072).

Can Inkling 2 Small read images, audio, video or PDFs?

Only images. Input modalities are text and image, so audio, video and PDFs are not supported.

Does Inkling 2 Small support tool calling?

Yes, Inkling 2 Small supports tool calling (function calling).

Does Inkling 2 Small have a reasoning or thinking mode?

Yes, and reasoning is always on. Effort levels are max, high, medium, low and minimal, with high as the default.

Where does Inkling 2 Small rank on Arena?

Inkling 2 Small ranks 22 on Arena WebDev with a score of 1646, 31 on Agent Arena with a score of 0, and 151 on Arena Text with a score of 1412.

What are the closest alternatives to Inkling 2 Small?

The closest alternatives are LongCat-2.5 by Meituan, Muse Wonder Full by Meta and MiniMax-M3.1-Flash-Preview by MiniMax. They are matched on model kind and release date, with no comparable price.

What is the best open-weight alternative to Inkling 2 Small?

Kimi K3, the highest-ranked open-weight model on Arena Text at rank 19. Inkling 2 Small itself is closed.

Is Inkling 2 Small open source or open weights?

No. Inkling 2 Small is closed and its license is Proprietary.

Who made Inkling 2 Small and when was it released?

Inkling 2 Small was made by Thinking Machines Lab and released on November 5, 2026.

Inkling 2 Small

Thinking Machines Lab

Announcement

Inkling 2 Small

Developer	Thinking Machines Lab
Release date	November 5, 2026
Family	Ling
Context window	1M tokens
Max output	131K tokens
Input	Text, image
Output	Text
Weights	Closed
License	Proprietary
Website	thinkingmachines.ai
Links	Model card

Part of a series on

Thinking Machines Lab

input: $0.00
output: $0.00
Context: 1Mtokens
Released: 1w ago

Multimodal MoE reasoning model (594B total, 17B active) for agentic coding, vision, and knowledge work

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Additional source evidence

Source model: thinkingmachines/inkling-2-small
Source family: ling
Last updated: 2026-11-05
Model context: 1M
Model output limit: 131K
Open weights: No
File attachments: Yes
Reasoning: Yes
Tool calling: Yes
Temperature control: Yes

Published benchmarks

Benchmark	Score	Evaluation details	Evidence
Artificial Analysis Intelligence Index	30.6	v5.0	Source

Official references

Complete source record (JSON)

{
  "id": "thinkingmachines/inkling-2-small",
  "name": "Inkling 2 Small",
  "description": "Multimodal MoE reasoning model (594B total, 17B active) for agentic coding, vision, and knowledge work",
  "family": "ling",
  "last_updated": "2026-11-05",
  "attachment": true,
  "reasoning": true,
  "tool_call": true,
  "temperature": true,
  "modalities": {
    "input": [
      "text",
      "image"
    ],
    "output": [
      "text"
    ]
  },
  "limit": {
    "context": 1048576,
    "output": 131072
  },
  "benchmarks": [
    {
      "name": "Artificial Analysis Intelligence Index",
      "score": 30.6,
      "source": "https://thinkingmachines.ai/news/inkling-2-small/",
      "version": "v5.0"
    }
  ],
  "release_date": "2026-11-05",
  "open_weights": false,
  "license": "Proprietary",
  "links": [
    {
      "url": "https://thinkingmachines.ai/news/inkling-2-small/",
      "type": "announcement"
    },
    {
      "url": "https://thinkingmachines.ai/model-card/inkling-2-small/",
      "type": "model_card"
    }
  ]
}